Lighting fixture



Dec, 27, 1927.

L. C. DUANE LIGHTING FIXTURE Filed Sept. 17, 1924 INVENTOR.

ATTORNEYJS.

a ing arms 3, adapted to support a glass Patented Dec. 27, 1927.

UNITEDSTATES PATENT QFFICE.

LEROY C. DUANE, OF MERIDEN, CONNECTICUT, ASSIGLtil'OIt Ti") THE MILLER 0F MERIDEN, CONNECTICUT, A CORPORATION 01 CO'l lNEC'IIGUT.

LIGHTING nrX'r n-n.

Application filed September 17, 1924. Serial No. 738,148

The object of this invention is the con struction of a lighting fixture which is es pecially adaptable for dining room domes, or any room where an intense circle of pleasant light desired in conjunction with a lesser amount of general illumination.

The figure is an elevation partially in sec tion in which 1 is the source of light, the socket of which is housed in a holder 2, havbowl t in the manner shown. The bowl is here shown as composed of three zones, an upper downwardly flaring zone 5, an intermediate straight sided zone 6 and a lowermost flat zone 7, which has a base 8 of the form shown. The comparative translucency of this how] varies in the various zones, the intermediate zone being preferably white enamelled in side. The top and bottom zones are of crys- Ill fill

tal glass sprayed with a light coating of enamel to admit of greater translucency when compared with the intermediate zone for purposes hereinafter set forth. A cy lindrical ring of aluminum 9 has its upper rim l0 turned back to fit over the upper edge 11 of the bowl and under the turned in portion 12 of the holder arms. The bottom of this ring is turned inward to form a polished elliptical reflector 13 fitting around the source.

Such domes are usually suspended over dining room tables. Typical rays 1" and s from the source strikingthe inner surface of polished reflector 13 will be reflected in direction 9 and s and pass through the base 8 of the bowl to illuminate the tabletop underneath So too ray t is transmitted without reflection through the base. There is a sutlicicnt quantity of the light which escapes the action of the reflector to illuminate the bowl generally, and the size and general contour of the reflector 13 can be varied to give a larger or smaller quantity of light on the table and a comparative brightness of the balance of the bowl.

It will also be observed that zone 6 is relatively denser than zones 5 and 7; the eye of those sitting around the table is on a level with this zone and its comparative darkness makes an effective screen when the eye is directed to the bowl itself. The light through the base 8 is reflected back by the surface of the table and to a certain extent plays a part in the general illumination. The upper zone 5 is of greater translucency than zone 6, so that it can effectively distribute such rays as reach its inner surface either directly from the source or by Way of various interior surface reflections. This zone above the line of vision of those seated around the table and therefore can not be unpleasant to them. The rays trans mitted by this zone although in diminished quantity ccmtrilnitc to a certain degree to the general illumination of the ceiling and up-- per parts of the room.

.lltn additional feature and one which renders the fixture of additional use is the fact that the reflector an be removed and the fixture employed for general illumination. Various types of gl ass and metal can be sub stituted for the one proposed as long as the general idea is carried out. The holder parts can also be varied at will as their form is not an intrinsic part of the invention and the surface of the bowl may he dec erated entirely or in part as desired.

lftefiector 18 is preferably of an elliptical contour so that a secondary focus i l is creatcd by rays reflected from the primary focus 15, as shown in the drawing.

I claim:

1. A lighting: fixture comprising a, light source, a bowl and a reflector, the bowl having a downwardly flaring; upper zone and a comparatively flat translucent base and an intermediate denser zone, the re flector being; adapted to reflect rays from the source through the b :e of the bowl, in. a sharply defined circle of light.

2. A lighting; fixture couiprisins a light source, a

iss bowl and a reflector, the bowl having a downwardly flaring); upper zone and a comparatively flat translucent base and an intermediate denser zone, the upper zone housing; a cylindrical ring; having an upwardly and inwardly converging base forming a reflector around the source and adapted to reflect rays from the source through the base of the bowl.

3. A lighting fixture comprising; a light source, a glass bowl and a reflector, the bowl having a downwardly flaring upper zone and comparatively fiat translucent base and an intermediate denser zone, the upper zone housing; a cylindrical ring surrounding the source havingits upper rim turned back to encircle the upper edge of the bowl with its base turned upwardly to form a reflector around the source and. adapted to reflect the source, the enclosing bowl consisting of an upper flaring portion and a eoniparatively flat translucent base, the reflector be ing adapted to reflect rays from the source through the base of the bowl.

'5. A lighting fixture comprising a light source, a glass bowl and an elliptical reflector with one of'its foci at the center of the source, the bowl being of the totally enclosing type surrounding the reflector and having a con'iparatively flat transluscent base the relative proportions of the reflector and 20 base of the bowl being such that the second focus of the ellipse is in the base of the bowl.

Signed at lvleriden, in the county of New Haven and State of Connecticut, this 11th day of September, 1924.

LEROY C. DOANE. 

